Edje-2000
Real Time MPEG 2 Streaming Encoder
Version 1.3
Adtec Digital, Inc. USA
Page 42 of 42
Decoding Time Stamp -
Decoding Time Stamp. This stamp is found in the PES packet header. It indicates the time
at which a piece of audio or video will be decoded.
DigiTAG -
Digital Television Action Group
Downlink -
Communication link from satellite to earth.
DTV -
Digital Television. A general term used to describe television that has been digitalized. It
can refer to Standard-definition TV or High-definition TV.
DTS -
See decoding Time Stamp.
DVB -
Digital Video Broadcasting. The DVB Project is a European consortium that has
standardized digital TV broadcasting in Europe and in other countries.
DVB ASI -
Asynchronous Serial Interface. This is a standard DVB interface for a transport stream.
DVB-C -
Digital Video Broadcasting-Cable. The DVB standard for broadcasting digital TV signals by
cable. The RF spectrum in digital cable TV networks has a frequency range of
(approx) 46MHz to 850MHz.
DVB-S -
Digital Video Broadcasting-Satellite. The DVB standard for broadcasting digital TV signals
via satellite.
DVB SPI -
Synchronous Parallel Interface. This is a standard DVB interface for a transport stream.
DVB-T -
Digital Video Broadcasting-Terrestrial. The DVB standard for broadcasting digital terrestrial
TV signals.
ECM -
Entitlement Control Message. ECMs carry private conditional access information that
allows receivers to decode encrypted information.
EIT (ATSC) -
Event Information Table. This table is part of the ATSC PSIP. It carries the TV guide
information including titles and start times for events on all the virtual channels
within the transport stream. ATSC requires that each system contain at least 4
EIT table, each representing a different 3-hour time block. The PIDs for these
tables are identified in the MGT.
EIT Actual (DVB) -
Event Information Table. This table is part of the DVB SI. It supplies the list of events
corresponding to each service and identifies the characteristics of each of these
events. Four types of EITs are defined by DVB : 1) The EIT Actual
Present/Following supplies information for the present event and the next or
following event of the transport stream currently being accessed. This table is
mandatory and can be found on PID=0x0012. 2) The EIT Other
Present/Following defines the present event and the next or following events of
other transport streams in the system that are not currently being accessed by
the viewer. This table is optional. 3) The EIT Actual Event Schedule supplies
the detailed list of events in the form of a schedule that goes beyond what is
currently or next available. This table supplies a schedule of events for the
transport stream currently being accessed by the viewer. 4) The EIT Other Event
Schedule supplies the detailed schedule of events that goes beyond what is
currently or next available. This table supplies a schedule of events for other
transport streams in the system that is not currently being accessed by the
viewer. The EIT Schedule tables are optional.
EMM -
Entitlement Management Message.EMMs specify authorization levels or services of
specific decoders.
They are used to update the subscription options or pay-per-
view rights for an individual subscriber
or for a group of subscribers.
EPG -
Electronic Program Guide. This guide represents a broadcasting data structure that describes all
programs and events available to the viewer. It functions like an interactive TV guide that allows users to view a
schedule of available programming and select what they want to watch.
ES -
Elementary Stream.
A bit stream that includes video, audio or data. It represents the
preliminary stage of the Packetized Elementary Stream (PES).
ETR -
ETSI Technical Report.
ETR 290 -
ETSI recommendation regarding measurement of MPEG-2?DVB transport streams.
